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Comparison of medulloblastoma and normal neural transcriptomes identifies a restricted set of activated genes

机译:髓母细胞瘤和正常神经转录组的比较确定了一组受限制的激活基因

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Over 1.4 million transcript tags expressed in 20 different human medulloblastomas were counted using serial analysis of gene expression. Digital gene expression profiles in the medulloblastoma were compared to multiple regions of the normal human brain, revealing 30 transcripts with high expression in multiple tumors and little or no expression in the normal cerebellum and other adult and pediatric brain regions. Using independent medulloblastoma samples and normal tissue, real-time PCR verified eight of nine selected genes as candidate tumor-associated antigens. Differential protein expression for CD24, prolactin and Topo2A was further confirmed by immunohistochemical analysis using medulloblastoma and normal brain sections and a tissue microarray. The genes highly expressed in the medulloblastoma include PRAME, a cancer-testis antigen and potential targets for immunotherapy.
机译:使用基因表达的系列分析,计数了在20种不同的人类髓母细胞瘤中表达的超过140万个转录标签。将髓母细胞瘤中的数字基因表达谱与正常人脑的多个区域进行比较,发现30个转录本在多个肿瘤中高表达,而在正常小脑以及其他成年和儿科脑区域中很少或没有表达。使用独立的髓母细胞瘤样品和正常组织,实时PCR验证了九种选定基因中的八种作为候选肿瘤相关抗原。 CD24,催乳素和Topo2A的差异蛋白表达已通过使用髓母细胞瘤和正常脑切片以及组织芯片的免疫组织化学分析进一步证实。在髓母细胞瘤中高表达的基因包括PRAME,一种癌-睾丸抗原和潜在的免疫治疗靶标。

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